SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 28: Forward Physics
T 28.4: Vortrag
Dienstag, 21. März 2023, 17:45–18:00, HSZ/0101
Physics potential of a combined data-taking of the LHCf and ATLAS roman pot detectors — •Yusuf Can Cekmecelioglu1, Clara Elisabeth Leitgeb1, and Cigdem Issever2 — 1DESY, Zeuthen, Germany — 2Humboldt University, Berlin, Germany
The study determines a common geometrical acceptance for the LHCf and ATLAS roman pot (ARP) detectors located in the forward regions of the ATLAS interaction point. In order to better understand the soft QCD processes and to improve pileup modelling for hadron accelerators and cosmic ray air shower modelling, a simultaneous analysis of central tracks (ATLAS), forward proton (ARP) and neutral particles (LHCf) could be beneficial. Analyses of single diffraction processes especially take advantage of these kind of setup, since the final state intact proton can be detected using ARPs and the neutral particles from the dissociated proton can be detected using LHCf and ATLAS Zero Degree Calorimeter (ZDC). Delta baryons produced in a pomeron exchange can lead to a similar signature with one neutral pion and one proton in the final state. This process, which effectively represents very low mass diffraction, is also taken into account in these studies.
In the end, a good common geometrical acceptance is found, yielding an acceptable event rate with the proposed joint data-taking between the detectors. Based on these studies, the ATLAS Forward Proton detector (AFP) joined the special run for LHCf in 2022, which results the very first combined data of LHCf, ZDC, ATLAS and AFP so far, with a recorded data of about 300 millions events.